Abstract: A beak or bill shaped projection on the front end of a tape dispenser cassette is defined by a spring tongue and a pair of rigid strips on the front wall of the cassette which engage in a tape feed mechanism having at least a feed wheel engaging between the strips when the cassette is inserted into a tape dispenser.

Abstract: A tape-applying apparatus has a housing adapted to hold a roll of tape, a feed unit actuatable for paying out a piece of the tape, a cutter actuatable for cutting off the piece of tape payed out by the feed unit, an actuating lever displaceable inward and outward between start and finish end positions and through an intermediate position, and a spring braced between the lever and the housing and urging the lever into the start end position. The lever is connected to the feed unit during inward travel of the lever from the start to the intermediate position for actuating the feed unit with the lever and paying out a piece of the tape and is connected to the cutter only during inward travel of the lever between the intermediate and finish positions for cutting off the piece of tape payed out.

Abstract: A thermal transfer meltable color layer receives a protective polymer coating on the side thereof, to be contacted with the thermal printing head to hold the meltable color material away from the printing head, thereby forming a thermal printing ribbon without the need for a support foil.

Abstract: A tape dispenser comprises a housing, a reel core (3) rotatable in the housing about an axis and having an inner periphery formed with an annular array of inwardly directed core teeth (17), and a drive wheel rotatable in the housing about the axis. A plurality of elastically deformable spring tongues (15) formed unitarily with each other each extend at an angle to the axis from the respective inner end fixed to the drive wheel to a respective outer end lying within the reel core adjacent the inner periphery thereof. Each inner end is axially offset and radially inwardly offset from the respective outer end and each outer end is integrally formed with at least one tongue tooth engaging between the core teeth. A supply of tape (14) is wound on the reel core such that when the tape is payed out or wound up on the reel core same rotates relative to the drive wheel and the core teeth move angularly relative to the tongue teeth with elastic inward deflection of same.

Abstract: A multilayer, flexible transfer strip with an auxiliary carrier and a contact adhesive coating, whereby between the auxiliary carrier and the contact adhesive coating is provided a binder-containing transfer coating, which has a stronger adhesion to the contact adhesive coating than to the auxiliary carrier. The binder-containing transfer coating contains a tear-off aid in the form of a soluble cellulose derivative. On incorporating white pigments into the transfer coating, the transfer strip can be used for correcting written representations or typed characters. Correction takes place rapidly and simply and leads to the formation of a uniform coating with a sharp tear-off.

Abstract: A thermal printing ribbon is made from an aqueous dispersion of a thermal plastic binder and particles of a wax component, fat-soluble dyestuff and a pigment so that these particles are found side by side in the interstices of a skeleton or matrix formed by a thermoplastic. The thermal printing ribbon has a multistrike capacity.

Abstract: The color transfer density of a thermocarbon ribbon can be improved by forming the wax phase of a melt color layer of such a ribbon so that it contains a paraffin with a hardening temperature of about 50 to 110.degree. C. and at least one ethylene-vinylacetate wax forming a eutectic with a paraffin.

Abstract: A release layer effective for both wax-bonded and plastic-bonded or wax and plastic-bonded melt color layers is provided in a thermocolor, e.g. thermocarbon, ribbon in the form of a substance capable of splitting off water at the thermal printing temperature dispersed in a binder.

Abstract: A thermal transfer meltable color layer receives a protective polymer coating on the side thereof, to be contacted with the thermal printing head to hold the meltable color material away from the printing head, thereby forming a thermal printing ribbon without the need for a support foil.

Abstract: A thermal transfer ribbon, suitable for printing of multiple sharp impressions, employs as the binder for its fusible colorant layer an olefin/vinyl ester copolymer, particularly an ethylene/vinyl acetate copolymer having the ratio of vinyl acetate units to ethylene units of about 0.01 to 0.07. The ribbon is conveniently made by coating a solution of this polymer, with the colorant substance dissolved or dispersed therein, onto a substrate such as a synthetic polyester film.

Abstract: An aqueous ink eradicator solution for inks utilizing triaryl methane dyestuff and containing a reducing sulfur compound. the ink contains 20 to 50% by weight of sugar and/or a solid sugar alcohol and the reducing sulfur compound in an amount of 0.5 to 5% by weight.

Abstract: In a hand operated device for transferring a film (28) from a carrier tape (22) to a substrate, in which in a casing the carrier tape (22) is guided from a smaller supply reel (3) to a pressure edge (33) of an application foot (31) projecting outwards at the bottom on the casing and from the foot back into the casing and onto a larger take-up reel (4), in that the supply and take-up reels (3,4) are coupled together by means of a slip clutch acting in the rotation direction and to the casing are fitted guide means for guiding the carrier tape (22), the supply reel (3) and take-up reel (4) being axially juxtaposed and inclined at an acute angle to one another. At the bottom, the smaller supply reel (3) projects into the inner area (24) of the larger take-up reel (4) on the side thereof open towards reel (3), while its top surface is located completely outside the same. The slip clutch is located centrally between the two reels (3,4).

Abstract: A hand-held device for applying a film to a substrate, especially a cover film to a paper substrate, by pressing a carrier foil provided with the film against the substrate with an applicator foot, provides that individual segments of the pressing edge of this foot can be individually deflected resiliently to allow the foil and the film to be accommodated to irregularities of the substrate and differences in the yieldability thereof.

Abstract: The reflectivity and shininess of print applied in a thermal-printing process using a thermocolor or thermocarbon ribbon can be reduced by providing a nonmeltable intermediate organic layer between the thermocolor transfer layer and the carrier which comprises a water-soluble material in the form of an aminoplast, a starch or cellulose derivative or a polymer such as polyvinylpyrrolidone, polyvinylalcohol, polyacrylate or polymethylacrylate.

Abstract: A cartridge-type fountain pen is formed at its rear end with a reserve compartment for receiving a reserve ink cartridge or a liquid applicator reservoir whose applicator is designed to project through an opening end of the rear end of the barrel. A second cap can be pressed on this rear end and has a rear cap member spring biased into engagement with the reservoir and whose position is visible through a window in an outer cap member of this second cap so that the user can ascertain whether or not the liquid applicator is in place within the reserve compartment.

Abstract: A method of making a thermal-transfer ribbon for thermal printing in which an aqueous dispersion of the thermoplastic binder substance, a fat-soluble dyestuff and a wax or waxlike substance is formed. The dispersion is coated onto a foil or other carrier for the ribbon and water is evaporated. The coating is then subjected to a thermal treatment to melt the wax and dissolve the dyestuff therein prior to thermotransfer to a substrate.

Abstract: A thermocarbon ribbon having a foil-type carrier and a color transfer layer or melt color has its adhesion for the the paper substrate increased by an adhesion coating applied to the color transfer layer. The adhesion layer consists of a parafin wax matrix in which a sticky hydrocarbon resin is dispersed in finely divided form so that during printing, when the temperature of the adhesion layer is raised, the paraffin wax melts, dissolves the finely divided hydrocarbon resin and allows the sticky characteristic of the latter to increase adhesion of the color transfer material to the paper.

Abstract: A thermocarbon ribbon is formed by emulsifying two mutually incompatible thermoplastic polymers melting at heat-transfer temperatures of a wax. The emulsion containing a pigment is applied to a ribbon support and the solvent is evaporated. The ribbon has multi-strike capabilities and improved sharpness of transfer to rough paper resulting from the presence in the solid continuous phase of beads or microspheres of a dispersed phase, both phases being formed by the polymers.

Abstract: A thermocarbon ribbon is formed by emulsifying two mutually incompatible thermoplastic polymers melting at heat-transfer temperatures of a wax. The emulsion containing a pigment is applied to a ribbon support and the solvent is evaporated. The ribbon has multi-strike capabilities and improved sharpness of transfer to rough paper resulting from the presence in the solid continuous phase of beads or microspheres of a dispersed phase, both phases being formed by the polymers.

Abstract: A transfer ribbon for applying a film of a cover material to a substrate, especially a paper substrate provided with markings to be covered or to be provided with a stripe of color from a coloring agent contained in the cover material, has a carrier-foil strip to which a cover layer is applied and an adhesive layer applied to that cover layer. The adhesion between the cover layer and the foil is less than the adhesion between the cover layer and the adhesive layer so that when the adhesive side of the ribbon is pressed against the substrate, the foil can be withdrawn to leave the cover layer, containing the coloring agent, thereon.